chem 2 ch 19 review questions
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Chem Ch 19 Review Questions
1. Open-loop negative feedback refers to the phenomenon of:a. Negative feedback with a modifiable set point*b. Blood flow in the hypothalamic-hypophysial portal systemc. Blood flow to the pituitary via Dural-penetrating vesselsd. Negative feedback involving an unraveling, fixed set point
2. The specific feedback effector for the FSH is:a. Activinb. Inhibin*c. Progesteroned. Estradiol
3. Which anterior pituitary hormone lacks a stimulatory hypophysiotropic hormone?a. Growth hormoneb. Prolactin*c. Vasopressind. ACTH
4. The definitive suppression test to prove any autonomous production of growth hormone isa. Somatostatin infusionb. Estrogen primingc. Dexamethasone suppressiond. Oral glucose loading*
5. Which of the following are influenced by growth hormone?a. IGF-1b. IGFBP-IIIc. Lipolysisd. All of the above*
6. What statement concerning vasopressin secretion is truea. Vasopressin secretion is closely tied to plasma osmolalityb. Changes in blood volume also alter vasopressin secretionc. A reduction in effective blood volume overrides the effects of plasma osmolality in
regulating vasopressin secretiond. All of the above*
7. What are the long term sequelae of untreated or partially treated acromegaly?a. An increased risk of colon and lung cancer*b. A reduced risk of heart diseasec. Enhanced longevityd. Increased muscle strength
8. Thyrotropin-releasseing hormone TRH stimulates the secretion ofa. Prolactinb. Growth hormonec. TSHd. Both A and C*
9. Estrogen influences the secretion of which of the following hormone?
Chem Ch 19 Review Questions
a. Growth hormoneb. Prolactinc. Luteinizing hormoned. All of the above*
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